Question : 21.What hormone released from the pancreas in response to low : 1318518

21.What hormone is released from the pancreas in response to low blood glucose levels?

A) insulin

B) epinephrine

C) estrogen

D) glucagon

E) testosterone

22.What polymer is the principal storage form of glucose?

A) glycogen

B) cellulose

C) starch

D) DNA

E) insulin

23.The end product of glycolysis is pyruvate.  What condition inside the cell is needed to convert pyruvate to acetyl CoA for entry into the citric acid cycle?

A) sufficient oxygen

B) anaerobic conditions

C) yeast

D) high CO2

E) all of the above

24.Step 7 in glycolysis is shown below.  Which statement concerning this step is true?

A) The hydrolysis of ATP provides the energy necessary for the removal of a phosphate group from 1,3-bisphosphoglycerate.

B) The hydrolysis of 1,3-bisphosphoglycerate provides the energy necessary for the phosphorylation of ADP.

C) The energy required for the hydrolysis of 1,3-bisphosphoglycerate is stored in ADP.

D) The hydrolysis of 1,3-bisphosphoglycerate provides the energy necessary for the hydrolysis of ATP.

E) The phosphorylation of 1,3-bisphosphoglycerate is driven by the phosphorylation of ADP.

25.The hydrolysis of ATP can be used to “drive” a reaction.  What does this mean?

A) ATP acts as a carrier molecule for substrates in reactions.

B) The ATP produced upon hydrolysis acts as a catalyst to increase the rates of otherwise slow biochemical processes.

C) The energy produced from the hydrolysis of ATP is used by energy requiring reactions in the body.

D) The hydrolysis of ATP yields a phosphate group that is used as a cofactor in enzyme-catalyzed reactions in the body.

E) Hydrolysis of ATP activates the effector site on allosteric enzymes, which can then be used to catalyze reactions.

26.Of the several high-energy compounds produced in cells, which one is the principal energy storage compound?

A)ATPD)glycerol

B)AMPE)glucose

C)glucose-6-phosphate

27.Which enzyme catalyzes the hydrolysis of milk sugar?

A)  lipase    B)  hydrolase    C)  lactose    D)  lactase    E)  peptase

28.Which enzyme catalyzes the hydrolysis of dietary proteins in the stomach?

A)  lactase    B)  pepsin    C)  lipase    D)  amylase    E)  insulin

29.Which of the following statements concerning the digestion of food groups is FALSE?

A) Digestion of all food groups begins in the mouth.

B) Carbohydrates are broken down into glucose and other monosaccharides.

C) Fats are broken down into glycerol and fatty acids.

D) Proteins are broken down into amino acids.

E) Polysaccharides are broken down into glucose and other monosaccharides.

30.When one molecule of glucose undergoes glycolysis followed by alcohol fermentation, what products, and how many molecules of each of them, account for the 6 carbon atoms?

A)6 molecules of carbon dioxide and 6 molecules of water.

B)2 molecules of ethanol and 2 molecules of carbon dioxide.

C)1 molecule of ethanol, 3 molecules carbon dioxide, and 3 molecules of water.

D)6 molecules of carbon monoxide and 6 molecules of water.

E)None of the choices are correct.